source: branches/2931_OR-Tools_LP_MIP/HeuristicLab.MathematicalOptimization/3.3/LinearProgramming/Algorithms/Solvers/GurobiSolver.cs @ 16736

Last change on this file since 16736 was 16736, checked in by ddorfmei, 5 months ago

#2931: Upgraded persistence to HEAL.Attic

File size: 2.7 KB
Line 
1#region License Information
2/* HeuristicLab
3 * Copyright (C) 2002-2018 Heuristic and Evolutionary Algorithms Laboratory (HEAL)
4 *
5 * This file is part of HeuristicLab.
6 *
7 * HeuristicLab is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * HeuristicLab is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
19 */
20#endregion
21
22using System;
23using Google.OrTools.LinearSolver;
24using HeuristicLab.Common;
25using HeuristicLab.Core;
26using HeuristicLab.Data;
27using HeuristicLab.Parameters;
28using HEAL.Attic;
29
30namespace HeuristicLab.ExactOptimization.LinearProgramming {
31
32  [Item("Gurobi", "Gurobi (http://www.gurobi.com/) must be installed and licensed.")]
33  [StorableType("2C567159-8C09-4B5F-BFF8-D72561686C6B")]
34  public class GurobiSolver : ExternalIncrementalLinearSolver {
35
36    public GurobiSolver() {
37      Parameters.Add(libraryNameParam = new FixedValueParameter<FileValue>(nameof(LibraryName),
38        new FileValue { FileDialogFilter = FileDialogFilter, Value = Properties.Settings.Default.GurobiLibraryName }));
39      SolverSpecificParameters =
40        "# for file format, see http://www.gurobi.com/documentation/8.1/refman/prm_format.html" + Environment.NewLine +
41        "# for parameters, see http://www.gurobi.com/documentation/8.1/refman/parameters.html" + Environment.NewLine +
42        "# examples:" + Environment.NewLine +
43        "# Seed 10" + Environment.NewLine +
44        "# Method 2 # Barrier (LP, root node of MIP)" + Environment.NewLine +
45        "# NodeMethod 2 # Barrier (MIP)" + Environment.NewLine;
46    }
47
48    protected GurobiSolver(GurobiSolver original, Cloner cloner)
49          : base(original, cloner) {
50      problemTypeParam = cloner.Clone(original.problemTypeParam);
51    }
52
53    [StorableConstructor]
54    protected GurobiSolver(StorableConstructorFlag _) : base(_) { }
55
56    protected override Solver.OptimizationProblemType OptimizationProblemType =>
57      ProblemType == ProblemType.LinearProgramming
58        ? Solver.OptimizationProblemType.GurobiLinearProgramming
59        : Solver.OptimizationProblemType.GurobiMixedIntegerProgramming;
60
61    public override IDeepCloneable Clone(Cloner cloner) => new GurobiSolver(this, cloner);
62  }
63}
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